90243909

素因数分解:

$3^3\times 7^1\times {\mathrm{691}}^2$

素因数の和:1398

約数の個数: 24

約数和(自身を含む): 153015360

約数和(自身を除く): 62771451

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 691, 2073, 4837, 6219, 14511, 18657, 43533, 130599, 477481, 1432443, 3342367, 4297329, 10027101, 12891987, 30081303, 90243909]

約数ペア:

[(1, 90243909), (3, 30081303), (7, 12891987), (9, 10027101), (21, 4297329), (27, 3342367), (63, 1432443), (189, 477481), (691, 130599), (2073, 43533), (4837, 18657), (6219, 14511)]